# CVE-2021-24330: Funnel Builder by CartFlows < 1.6.13 - Authenticated Stored XSS via FB Pixel ID and Google Analytics ID

> Authenticated high-privilege users can inject XSS payloads via Facebook Pixel and Google Analytics ID settings, potentially executing scripts on generated pages or the entire site.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 1 Jun 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-jpx9-hmgp-grj6

## What is CVE-2021-24330?

CVE-2021-24330 is a medium-severity cross-site scripting vulnerability in Unknown Funnel Builder by CartFlows – Create High Converting Sales Funnels For WordPress, published on 1 Jun 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

The Funnel Builder by CartFlows – Create High Converting Sales Funnels For WordPress plugin before 1.6.13 did not sanitise its facebook_pixel_id and google_analytics_id settings, allowing high privilege users to set XSS payload in them, which will either be executed on pages generated by the plugin, or the whole website depending on the settings used.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2021-24330?

It affects 1 product.


Products: Cartflows Cartflows.

## How do I fix CVE-2021-24330?

No fix has been published for CVE-2021-24330 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24330 being exploited?

There is no known exploitation of CVE-2021-24330 in the wild and no public exploit code.

## Other vulnerabilities in Unknown Funnel Builder by CartFlows – Create High Converting Sales Funnels For WordPress

- [CVE-2023-36686](https://insights.sbomify.com/CVE-2023-36686/): WordPress CartFlows Pro Plugin <= 1.11.11 is vulnerable to Cross Site Scripting (XSS) (high 7.1)
- [CVE-2019-25151](https://insights.sbomify.com/CVE-2019-25151/): Funnel Builder <= 1.3.0 - Arbitrary Plugin Activation (medium 5.4)
- [CVE-2020-36736](https://insights.sbomify.com/CVE-2020-36736/): Cross-site request forgery in CartFlows – Funnel Builder & Checkout Plugin for WooCommerce (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24330 and fix it if it is affected.

What it is: CVE-2021-24330 is a medium-severity cross-site scripting vulnerability in Unknown Funnel Builder by CartFlows – Create High Converting Sales Funnels For WordPress, published on 1 Jun 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-24330 in the wild and no public exploit code.

Affected product: Unknown Funnel Builder by CartFlows – Create High Converting Sales Funnels For WordPress. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-24330/ (Markdown: https://insights.sbomify.com/CVE-2021-24330/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24330
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24330
- OSV: https://osv.dev/vulnerability/CVE-2021-24330

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-24330/
Summaries are generated and may contain mistakes; the official description above is the record.